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This lock is somewhat deceptive. I purchased a gun shelf unit from a manufacturer and after receiving it decided I could build my own so I'd have a second hidden storage place. I purchased this lock and after installing it would not open no matter what I did. While moving the shelve I picked up the unit and when I applied pressure to the door the unit opened. What that means....when you slide the unlock card over the locking mechanism you will here the lock activate and unlock. You have to push up slightly on the shelf/door to disengage the locking mechanism and then the door will open. This is aggravating if you are looking for a locking mechanism that simply unlocks and the door opens without any additional action. If this doesn't bother you the lock seem solid and was a breeze to install. The instructions for operating the lock are intense and confusing so be prepared to use a push pin to reset things a couple of times until you get the right sequence down. You will also notice the USB option. I'm not sure how you would incorporate that into a build without giving away that you have a hidden lock. It comes out of the main locking mechanism and is only about 3" long. It is also very small and the head is at a right angle to the cord. Meaning that if you drill a hole through something to pass the power cord through, it must be the size of the right angled head, not the size of the power cord. Then there's no way to mount that tiny head to anything. It will just sit there. Again, the idea behind a hidden lock... is to be hidden. Having this cord dangling defeats that purpose.
I bought this to keep a roommate out of my kitchen cabinet so they stop stealing my food. My cabinet only has one handle so I knew I had to buy more than just a standard child lock. This works perfectly so far, but the only issue I've found is not getting the other keys to work although I thought I registered them. It was also a little hard to install. It took me and one of my friends to figure it out. I live in an apartment so I did not want to nail it into the cabinet. I used double sided tape, but it wasn't strong enough, so I went to CVS and bought gorilla glue double sided tape and it worked perfectly. I wanted something that she wouldn't see and it worked so well that she took her food, left the apartment and hasn't come back in two days :-)
I am worried that it will stop working eventually or when I am out of town it will lose battery and I won't get back in, but thankfully it will be easier to open since I only taped it inside the cabinet.
The install is straight forward. Just need to pay attention to the measurements, I’m using this a secondary lock for a door. Be mindful of the batteries, when it starts to beep replace them and there os no way to unlock if they go dead. I will buy more when needed and have recommended to two friends.
This lock is working great. When the battery gets low it sounds like a ticking time bomb so you know to change the batteries! I took off one star because the template for installation wasn't correct and I had to remove the latch after installing and readjust. I also wish it would "throw" itself out of the lock with more force. When testing not installed the lock would throw the latch out. Once installed, you have to pull in order to open. I have this installed with some gas struts and was hoping that when I unlocked it that it would auto open.
A little hard to line up so they work and haven't been able to program more then two cards. I intend to keep buying them anyway. Not sure if the expensive ones are worth triple the price as I have one of them also.
The product works great and is a value for the cost, but the installation was a pain. It took me three hours to install and several unnecessary holes. Detailed installation instructions and/or a video on how to install it would be a great addition.
Used on a hidden gun cabinet! Works well, only concern is Chinese quality. Comes with usb backup power but this is not always practical for every application. Good idea and fairly easy to install. Have bought two already and will buy more.